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Abstract

The production of muons from heavy-flavour hadron decays in p–Pb collisions at was studied for GeV/c with the ALICE detector at the CERN LHC. The measurement was performed at forward (p-going direction) and backward (Pb-going direction) rapidity, in the ranges of rapidity in the centre-of-mass system (cms) and , respectively. The production cross sections and nuclear modification factors are presented as a function of transverse momentum (). At forward rapidity, the nuclear modification factor is compatible with unity while at backward rapidity, in the interval GeV/c, it is above unity by more than 2σ. The ratio of the forward-to-backward production cross sections is also measured in the overlapping interval and is smaller than unity by 3.7σ in GeV/c. The data are described by model calculations including cold nuclear matter effects.